feat(repair): 新增全库修复+重刮入口，剧集类路径正确归类

- 服务层 RepairAndRescrapeAllLibraries：先从路径占位符回填缺失/错误外部ID，再逐库重刮(含 no_match 重试)
- 新增 handler 与路由 POST /api/admin/media/repair-rescrape，异步执行经 WS 推送进度
- 前端媒体库页新增「全库修复+重刮」按钮调用该接口
- groupSeries：路径落在剧集类目录(电视剧/动漫/特别篇等)时按剧集卡处理，跳转分类视图

internal/handler/repair_rescrape.go

@@ -0,0 +1,38 @@
+// Package handler — batch repair+rescrape endpoint.
+package handler
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/ShukeBta/MediaStationGo/internal/service"
+)
+
+// repairAndRescrapeAllHandler 触发"全库修复+重刮"流程:先从媒体路径中的
+// {tmdb-N}/{bangumi-N} 等占位符回填缺失的外部 ID, 再对所有媒体库重刮一遍。
+//
+// 路由: POST /api/admin/media/repair-rescrape (需 admin)
+// 异步执行, 立即返回 202;通过 WS hub "scrape" topic 推送进度。
+func repairAndRescrapeAllHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		task := startScrapeHTTPTask(svc, "全库修复并重刮", "", "")
+		go func() {
+			result, err := svc.RepairAndRescrapeAllLibraries(context.Background())
+			metrics := map[string]int64{
+				"repaired":  int64(result.Repaired),
+				"libraries": int64(result.Libraries),
+				"matched":   int64(result.Matched),
+			}
+			stage := "completed"
+			message := "全库修复并重刮完成"
+			if err != nil {
+				stage = "scrape"
+				message = "全库修复并重刮失败"
+			}
+			finishHTTPTask(task, err, stage, message, metrics, nil)
+		}()
+		c.JSON(http.StatusAccepted, gin.H{"status": "started"})
+	}
+}

internal/handler/routes_admin.go

@@ -87,6 +87,9 @@ func registerAdminRoutes(api *gin.RouterGroup, cfg *config.Config, svc *service.
 		admin.GET("/organize/sources", organizeSourcesHandler(svc))
 		admin.POST("/organize/source", organizeDirectoryHandler(svc))
 
+		// 全库修复+重刮:从路径占位符回填缺失外部 ID,然后批量重刮整库。
+		admin.POST("/media/repair-rescrape", repairAndRescrapeAllHandler(svc))
+
 		// API key management (encrypted at rest).
 		admin.GET("/api-configs", listAPIConfigsHandler(svc))
 		admin.GET("/api-configs/:provider", getAPIConfigHandler(svc))